Simultaneous and sensitive analysis of inorganic and organic gaseous compounds by pulsed discharge helium ionization detector (PDHID)

抄録

A simple gas chromatographic method has been developed for the simultaneous and sensitive analysis of inorganic (H₂, CO, and CO₂) and organic gaseous compounds (CH₄, C₂H₄, C₂H₆, C₃H₆, C₃H₈, iso-C₄H₁₀, and n-C₄H₁₀). The analysis of these gases generally requires multi-columns and/or multi-detectors, whereas the proposed method uses a single micropacked column and a single pulsed discharge helium ionization detector (PDHID). All of the investigated peaks (except for the N₂ and O₂ peaks, which are the major components of air) show good separation when using an oven temperature program from 40°C to 300°C. This gas chromatography-PDHID system yielded good linearity and a relative standard deviation of less than 5%. This sensitive and convenient method shows great potential in analyses of various types of gaseous compounds.